Two fun things in Sunday’s Old Testament readings, 1) Naaman’s skin is restored like that of a little child; and 2) he takes a load of dirt back to Syria.
A reading from 2 Kings 5:14-17:
“Naaman went down and plunged into the Jordan seven times at the word of Elisha, the man of God. His flesh became again like the flesh of a little child, and he was clean of his leprosy.
Naaman returned with his whole retinue to the man of God. On his arrival he stood before Elisha and said, “Now I know that there is no God in all the earth, except in Israel. Please accept a gift from your servant.”
Elisha replied, “As the Lord lives whom I serve, I will not take it”; and despite Naaman’s urging, he still refused.
Naaman said: “If you will not accept, please let me, your servant, have two mule-loads of earth, for I will no longer offer holocaust or sacrifice to any other god except to the Lord.”
The word of the Lord.

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It is the way we become born again—water and Spirit—and when we’re born again, we’re like a newborn child. That’s why Naaman’s dipping in the Jordan River is a prefiguring of water baptism. That’s why it’s interesting. Naaman’s flesh became like that of a newborn baby, as it symbolizes the new birth we receive through water baptism, which will come with the New Covenant.
John 3:3–5: “Jesus answered him, “Truly, truly, I say to you, unless one is born again he cannot see the kingdom of God.” Nicodemus said to him, “How can a man be born when he is old? Can he enter a second time into his mother’s womb and be born?” Jesus answered, “Truly, truly, I say to you, unless one is born of water and the Spirit, he cannot enter the kingdom of God.“

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From this point on, Naaman will spread that dirt out on teh ground where he worships, and he will stand on the holy ground of the Lord to worship. YHWH is the only God of all the earth and on his earth Naaman will worship.
One of the interesting first mentions of “holy ground”. Also it can be seen as a precursor to holy relics.